* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-user-select: none;
  /*webkit浏览器*/
  -moz-user-select: none;
  /*火狐*/
  -ms-user-select: none;
  /*IE10*/
  user-select: none;
  overflow: hidden; // 隐藏滚动条
}

body {
  width: 100vw;
  height: 100vh;
}

#app {
  width: 100vw;
  height: 100vh;
}
